According to a University of Western Cape website, Columnar epithelium cells are column shaped. Their main function is to line the stomach and intestines. Some are specialized for sensory reception. Those would be found in the nose, ears, and taste buds of the tongue. There are goblet cells, which are actually unicellular glands, which can be found in certain columnar epithelium. These goblet cells secrete a mucus in order to maintain a smooth surface. Most cells, that contain a nucleus, the nucleus is at the center of the cell. The columnar epithelium contains a nucleus at the base of the cell.
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